Site Health: Remove paragraph tag from the actions container in issue template.

Most of the tests pass content that is already wrapped in a paragraph or list tags, thus producing nested paragraphs or invalid markup.

Additionally, don't output an empty `<div>` tag if the test does not provide any actions.

Props maxpertici, afercia.
Fixes #48948.

git-svn-id: https://develop.svn.wordpress.org/trunk@47529 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/site-health.php

@@ -150,9 +150,11 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 	</h4>
 	<div id="health-check-accordion-block-{{ data.test }}" class="health-check-accordion-panel" hidden="hidden">
 		{{{ data.description }}}
-		<div class="actions">
-			<p class="button-container">{{{ data.actions }}}</p>
-		</div>
+		<# if ( data.actions ) { #>
+			<div class="actions">
+				{{{ data.actions }}}
+			</div>
+		<# } #>
 	</div>
 </script>